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Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($)
$ in Thousands
9 Months Ended
Sep. 30, 2018
Sep. 30, 2017
Cash Flows From Operating Activities    
Net income $ 16,665 $ 5,771
Adjustments to reconcile net income to net cash provided by (used in) operating activities:    
Depreciation and amortization 10,235 10,482
Equity income from an unconsolidated affiliate (377) (424)
Distribution from equity method investee 225
Provision for deferred income taxes 1,426 266
Non-cash stock-based compensation 2,258 1,918
Change in operating assets and liabilities:    
Accounts receivable (11,827) (55,566)
Inventories 39,482 10,621
Prepaid expenses and other current assets 344 6,346
Other assets 2,079 1,181
Accounts payable 22,864 (7,145)
Accrued expenses and other current liabilities 4,373 3,547
Deferred revenue 164 (6,438)
Total adjustments 71,246 (35,212)
Net cash provided by (used in) operating activities 87,911 (29,441)
Cash Flows From Investing Activities    
Purchases of property and equipment (3,816) (14,122)
Acquisition of Stack Technology, net of cash acquired (35) (1,723)
Net cash used in investing activities (3,851) (15,845)
Cash Flows From Financing Activities    
Net (payments) borrowings under line of credit (79,261) 60,948
Borrowings under notes payable 5,212
Payments under notes payable (2,631) (2,777)
Change in book overdraft (42) 1,885
Payments of obligations under capital leases (813) (1,113)
Payments of earn-out liability (2,199) (11,058)
Proceeds from capital lease obligations 587
Net proceeds from stock issued under stock option plans 1,409 5,007
Payments for deferred financing costs (273) (669)
Common shares repurchased and held in treasury (11,354)
Payment of taxes related to net-settled stock awards (513) (808)
Net cash (used in) provided by financing activities (84,323) 45,860
Effect of foreign currency on cash flow (301) 600
Net change in cash and cash equivalents (564) 1,174
Cash and cash equivalents at beginning of the period 9,113 7,172
Cash and cash equivalents at end of the period 8,549 8,346
Supplemental Cash Flow Information    
Interest paid 6,726 4,970
Income taxes paid, net 1,306 3,826
Supplemental Non-Cash Investing and Financing Activities    
Financed and accrued purchases of property and equipment $ 1,560 $ 520