<TABLE> <S> <C>

<PAGE>
<ARTICLE> 5
<MULTIPLIER> 1,000
       
<S>                             <C>                     <C>                     <C>                     <C>
<PERIOD-TYPE>                   3-MOS                   3-MOS                   3-MOS                   3-MOS
<FISCAL-YEAR-END>                          DEC-31-1997             DEC-31-1998             DEC-31-1997             DEC-31-1998
<PERIOD-END>                               MAR-31-1997             MAR-31-1998             JUN-30-1997             JUN-30-1998
<CASH>                                           5,552                   5,581                   9,329                  20,331
<SECURITIES>                                         0                       0                       0                       0
<RECEIVABLES>                                    2,991                   3,114                   4,562                   6,631
<ALLOWANCES>                                         0                       0                       0                       0
<INVENTORY>                                      5,600                   7,414                   9,813                  12,369
<CURRENT-ASSETS>                                14,240                  16,453                  24,306                  40,175
<PP&E>                                               0                       0                  14,267                  14,180
<DEPRECIATION>                                       0                       0                   9,575                   9,217
<TOTAL-ASSETS>                                  16,455                  18,698                  28,998                 186,860
<CURRENT-LIABILITIES>                            8,146                   9,339                  15,026                  21,806
<BONDS>                                            510                     400                     400                 218,502
<PREFERRED-MANDATORY>                                0                       0                       0                       0
<PREFERRED>                                          0                       0                       0                       0
<COMMON>                                         1,026                   1,026                   1,235                     508
<OTHER-SE>                                       8,309                   9,359                  13,973                (53,956)
<TOTAL-LIABILITY-AND-EQUITY>                    16,455                  18,698                  28,998                 186,860
<SALES>                                              0                       0                       0                       0
<TOTAL-REVENUES>                                18,921                  22,372                  22,437                  41,558
<CGS>                                           12,134                  15,595                  14,373                  28,372
<TOTAL-COSTS>                                   12,134                  15,595                  14,373                  28,372
<OTHER-EXPENSES>                                 1,536                   1,750                   1,704                   5,189
<LOSS-PROVISION>                                     0                       0                       0                       0
<INTEREST-EXPENSE>                                  33                      38                      15                 (4,909)
<INCOME-PRETAX>                                  5,284                   5,065                   6,375                   3,088
<INCOME-TAX>                                        78                      76                      97                      80
<INCOME-CONTINUING>                              5,206                   4,989                   6,278                   3,008
<DISCONTINUED>                                       0                       0                       0                       0
<EXTRAORDINARY>                                      0                       0                       0                       0
<CHANGES>                                            0                       0                       0                       0
<NET-INCOME>                                     5,206                   4,989                   6,278                   3,008
<EPS-PRIMARY>                                        0                       0                       0                       0
<EPS-DILUTED>                                        0                       0                       0                       0
        

</TABLE>