v3.8.0.1
Consolidated Statements of Cash Flows - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Operating Activities      
Net income $ 67,017 $ 33,839 $ 47,605
Adjustments to reconcile net income to net cash provided by operating activities:      
Depreciation and amortization 15,684 16,811 16,063
Deferred income taxes (12,974) (1,262) 16,315
Excess tax benefits of options exercised 0 (60) (40)
Stock-based compensation attributable to equity awards 955 791 658
Other (587) 1,294 (190)
Changes in operating assets and liabilities:      
Accounts receivable (44,030) 1,210 20,843
Inventories 909 1,980 (17,003)
Trade accounts payable and accrued liabilities 25,004 (7,778) (5,715)
Other assets and liabilities 58 12 (2,415)
Income taxes payable (4,023) 11,723 (5,353)
Net cash provided by operating activities 48,013 58,560 70,768
Investing Activities      
Purchases of property, plant and equipment (21,754) (45,374) (43,711)
Proceeds from sale of assets 1,064 3,792 242
Net cash used in investing activities (20,690) (41,582) (43,469)
Financing Activities      
Deferred financing fees (1) (197) 0
Purchase of treasury stock 0 0 (2,922)
Proceeds from issuance of common stock, net 1,948 1,416 1,728
Dividends paid (1,661) (1,656) (1,657)
Excess tax benefits of options exercised 0 60 40
Net cash provided by (used in) financing activities 286 (377) (2,811)
Net increase in cash and cash equivalents 27,609 16,601 24,488
Cash and cash equivalents at beginning of year 95,753 79,152 54,664
Cash and cash equivalents at end of year $ 123,362 $ 95,753 $ 79,152