v3.10.0.1
Consolidated Statements of Cash Flow - USD ($)
$ in Thousands
 6 Months Ended
Jun. 30, 2018
Jun. 30, 2017
Operating Activities:    
Net income $ 29,442 $ 24,565
Adjustments to reconcile net income to net cash provided by (used in) operating activities:    
Depreciation and amortization 8,213 7,648
Deferred income taxes 761 814
Stock-based compensation attributable to equity awards 1,070 719
Other (5) (512)
Changes in operating assets and liabilities:    
Accounts receivable (29,529) (35,698)
Inventories (4,501) (2,184)
Other assets 216 (715)
Trade accounts payable and accrued liabilities (9,643) 14,508
Current income taxes receivable / payable (2,022) (8,444)
Net cash provided by (used in) operating activities (5,998) 701
Investing Activities:    
Purchases of property, plant and equipment (14,816) (11,091)
Proceeds from sale of assets 0 923
Net cash used in investing activities (14,816) (10,168)
Financing Activities:    
Deferred financing fees 0 (1)
Proceeds from issuance of common stock, net 306 403
Dividends paid (834) (830)
Net cash used in financing activities (528) (428)
Net decrease in cash and cash equivalents (21,342) (9,895)
Cash and cash equivalents at beginning of period 123,362 [1] 95,753
Cash and cash equivalents at end of period $ 102,020 $ 85,858
[1] The consolidated balance sheet at December 31, 2017, as presented, is derived from the audited consolidated financial statements at that date.