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Consolidated Statements of CASH FLOWS (USD $)
In Thousands, unless otherwise specified
 12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
CASH FLOWS FROM OPERATING ACTIVITIES      
Net income $ 14,911 $ 15,463 $ 8,444
Adjustments to reconcile net income (loss) to net cash provided by operating activities:      
Depreciation and amortization 19,415 18,242 16,859
Deferred income taxes (2,209) (7,947) (2,953)
Share-based compensation expense 2,553 2,060 1,716
Provision for doubtful accounts 165 167 380
Net loss (gain) on sale of property and equipment (12) 94 (1,653)
Other 337 237 (628)
Changes in operating assets and liabilities:      
Accounts receivable 1,210 2,299 1,397
Inventories (3,458) (1,775) 1,363
Customer deposits 6,391 987 (417)
Other assets and liabilities 1,819 (11,714) (462)
Accounts payable and accrued liabilities 11,046 959 155
NET CASH PROVIDED BY OPERATING ACTIVITIES 52,168 19,072 24,201
CASH FLOWS FROM INVESTING ACTIVITIES      
Capital expenditures (25,014) (17,566) (14,053)
Restricted cash and cash equivalents (200) (6,813) 0
Proceeds from sale of property and equipment 38 157 2,856
Other investing activities 410 0 0
Net Cash Used in Investing Activities (24,766) (24,222) (11,197)
CASH FLOWS FROM FINANCING ACTIVITIES      
Proceeds from borrowings under revolving credit facilities 0 0 0
Payments of borrowings under revolving credit facilities 0 0 0
Net change in borrowings under revolving credit facilities 0 0 0
Payments on lease obligations (766) (588) (385)
Proceeds from exercise of stock options 2,457 285 3,319
Dividends paid (24,684) (2,609) (2,168)
Other financing activities (444) (398) (191)
Net Cash (Used in) Provided by Financing Activities (23,437) (3,310) 575
(DECREASE) INCREASE IN CASH AND CASH EQUIVALENTS 3,965 (8,460) 13,579
CASH AND CASH EQUIVALENTS AT BEGINNING OF PERIOD 49,585 58,045 44,466
CASH AND CASH EQUIVALENTS AT END OF PERIOD $ 53,550 $ 49,585 $ 58,045