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CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2019
Mar. 31, 2018
Cash flows from operating activities:    
Net income (loss) $ (7,364) $ 161
Adjustments to reconcile net income (loss) to net cash provided by operating activities:    
Depreciation and amortization 2,726 2,736
(Gain) loss on sale or disposal of Property, equipment and leasehold improvements 8 (516)
Deferred income taxes (2,341) (605)
Lease expense 54  
Stock-based compensation 418 485
Other 66 73
Changes in operating assets and liabilities:    
Accounts receivable, net 2,466 (285)
Inventories (2,531) (1,791)
Other current assets (2,406) 1,128
Accounts payable, deferred revenue and other accrued expenses 11,681 3,015
Accrued salaries, wages and payroll taxes 745 (1,185)
Refundable deposits (70) (475)
Net cash provided by operating activities 3,452 2,741
Cash flows from investing activities:    
Expenditures for Property, equipment and leasehold improvements (5,173) (1,104)
Proceeds from sale of Property, equipment and leasehold improvements 16 22,456
Restricted cash from sale of Property, equipment and leasehold improvements 0 515
Net cash provided by (used in) investing activities (5,157) 21,867
Cash flows from financing activities:    
Principal payments on debt and finance lease obligations (277) (174)
Net borrowings (repayments) under revolving line of credit 2,609 (22,199)
Tax payments related to stock-based awards (157) 0
Net cash provided by (used in) financing activities 2,175 (22,373)
Increase in Cash, cash equivalents and restricted cash 470 2,235
Cash, cash equivalents and restricted cash:    
Beginning of period 1,200 579
End of period 1,670 2,814
Supplemental disclosure of cash flow information:    
Cash paid for interest 335 178
Cash paid for income taxes, net 0 1
Supplemental disclosure of non-cash information:    
Right-of-use assets obtained in exchange for operating lease obligations 19,726  
Right-of-use assets obtained in exchange for finance lease obligations 2,538  
Purchases of Property, equipment and leasehold improvements included in Accounts payable at end of period $ 1,384 $ 203