v3.10.0.1
Consolidated Statements of Cash Flow - USD ($)
$ in Thousands
 9 Months Ended
Sep. 30, 2018
Sep. 30, 2017
Operating Activities:    
Net income $ 53,120 $ 38,529
Adjustments to reconcile net income to net cash provided by operating activities:    
Depreciation and amortization 12,321 11,613
Deferred income taxes 1,516 (210)
Stock-based compensation attributable to equity awards 1,257 837
Other (145) (401)
Changes in operating assets and liabilities:    
Accounts receivable (41,706) (37,844)
Inventories (3,641) (2,145)
Other assets 120 (464)
Trade accounts payable and accrued liabilities 9,647 15,077
Current income taxes receivable / payable 642 (4,043)
Net cash provided by operating activities 33,131 20,949
Investing Activities:    
Purchases of property, plant and equipment (21,242) (16,195)
Proceeds from sale of assets 66 923
Net cash used in investing activities (21,176) (15,272)
Financing Activities:    
Deferred financing fees 0 (1)
Proceeds from issuance of common stock, net 431 1,184
Dividends paid (1,251) (1,246)
Net cash used in financing activities (820) (63)
Net increase in cash and cash equivalents 11,135 5,614
Cash and cash equivalents at beginning of period 123,362 [1] 95,753
Cash and cash equivalents at end of period $ 134,497 $ 101,367
[1] The consolidated balance sheet at December 31, 2017, as presented, is derived from the audited consolidated financial statements at that date.