v3.8.0.1
Consolidated Statements of Cash Flow - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2018
Mar. 31, 2017
Operating Activities:    
Net income $ 11,353 $ 13,632
Adjustments to reconcile net income to net cash used in operating activities:    
Depreciation and amortization 4,109 3,798
Deferred income taxes (311) (779)
Stock-based compensation attributable to equity awards 649 384
Other (7) (499)
Changes in operating assets and liabilities:    
Accounts receivable (19,581) (26,728)
Inventories (2,133) (2,364)
Other assets 609 446
Trade accounts payable and accrued liabilities (6,558) 9,248
Current income taxes receivable / payable 3,909 (1,584)
Net cash used in operating activities (7,961) (4,446)
Investing Activities:    
Purchases of property, plant and equipment (7,463) (5,554)
Proceeds from sale of assets 0 923
Net cash used in investing activities (7,463) (4,631)
Financing Activities:    
Deferred financing fees 0 (1)
Proceeds from issuance of common stock, net 306 222
Dividends paid (417) (415)
Net cash used in financing activities (111) (194)
Net decrease in cash and cash equivalents (15,535) (9,271)
Cash and cash equivalents at beginning of period 123,362 [1] 95,753
Cash and cash equivalents at end of period $ 107,827 $ 86,482
[1] The consolidated balance sheet at December 31, 2017, as presented, is derived from the audited consolidated financial statements at that date.