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Consolidated Statements of CASH FLOWS - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Cash Flows from Operating Activities      
Net income $ 27,789 $ 8,589 $ 32,265
Adjustments to reconcile net income to net cash provided by operating activities:      
Depreciation and amortization 25,756 22,613 21,450
Stock-based compensation expense 4,033 3,319 3,323
Excess tax benefit from stock-based plans (397) (896) (1,754)
Deferred income taxes (3,019) 4,800 (652)
Provision for doubtful accounts 314 257 120
Pension settlement expense 0 21,623 0
Other (160) 641 459
Changes in operating assets and liabilities:      
Accounts receivable 960 870 1,400
Inventories (2,305) (15,656) 5,419
Customer deposits (2,650) 4,679 (1,955)
Other assets and liabilities (590) (2,023) (2,638)
Accounts payable and accrued liabilities 2,501 6,638 (1,548)
Net Cash Provided by Operating Activities 52,232 55,454 55,889
Cash Flows from Investing Activities      
Capital expenditures (27,143) (30,882) (20,202)
Maturities of certificates of deposit 7,250 0 0
Purchase of commercial paper and certificates of deposit (9,975) (10,000) 0
Restricted cash and cash equivalents 12 (1,001) (3)
Other investing activities 1,501 511 85
Net Cash Used in Investing Activities (28,355) (41,372) (20,120)
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
Construction allowance receipts 6,701 1,050 0
Payments on lease obligations (2,534) (1,088) (867)
Proceeds from exercise of stock options 0 0 872
Excess tax benefit from stock-based plans 397 896 1,754
Dividends paid (8,060) (29,780) (5,353)
Common stock repurchased (14,002) (804) 0
Other financing activities (1,201) (2,060) (2,540)
Net Cash Used In Financing Activities (18,699) (31,786) (6,134)
Increase (Decrease) in Cash and Cash Equivalents 5,178 (17,704) 29,635
Cash and Cash Equivalents at Beginning of Year 65,481 83,185 53,550
Cash and Cash Equivalents at End of Year $ 70,659 $ 65,481 $ 83,185