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CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) (USD $)
In Thousands, unless otherwise specified
 6 Months Ended
Jun. 30, 2013
Jun. 30, 2012
Cash Flows from Operating Activities:    
Net income $ 13,090 $ 4,818
Adjustments to reconcile net income to net cash provided by operating activities:    
Depreciation and amortization 10,486 9,418
Share-based compensation expense 2,038 1,321
Provision for doubtful accounts 45 71
Other 448 545
Changes in operating assets and liabilities:    
Accounts receivable 1,364 1,815
Inventories (836) 101
Customer deposits 1,680 2,190
Other assets and liabilities (4,267) (954)
Accounts payable and accrued liabilities (11,071) 1,203
Net cash provided by operating activities 12,977 20,528
Cash Flows from Investing Activities:    
Capital expenditures (10,225) (12,821)
Other 4 236
Net cash used in investing activities (10,221) (12,585)
Cash Flows from Financing Activities:    
Payments on lease obligations (437) (373)
Dividends paid (1,776) (875)
Proceeds from exercise of stock options 623 0
Taxes on vested restricted shares (2,456) (515)
Other financing activities 0 (47)
Net cash used in financing activities (4,046) (1,810)
(Decrease) increase in cash and cash equivalents during the period (1,290) 6,133
Cash and cash equivalents at beginning of period 53,550 49,585
Cash and cash equivalents at end of period $ 52,260 $ 55,718