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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 $ 594 $ 1,560
Adjustments to reconcile net income to net cash provided by (used in) operating activities:    
Depreciation and amortization 336 390
Stock-based compensation 394 465
Deferred tax benefit on other comprehensive income   (9)
Amortization of discount on investments   (4)
Gain on sale of investments   (36)
Changes in assets and liabilities:    
Accounts receivable (2,970) (2,626)
Unbilled receivables (726) 617
Prepaid expenses and other current assets (170) (39)
Deferred tax assets (128) (20)
Accounts payable (6) 397
Accrued expenses 284 108
Accrued income taxes 46 12
Deferred revenue 183 (204)
Net cash provided by (used in) operating activities (2,163) 611
Cash flows from investing activities:    
Purchases of property and equipment (142) (61)
Sales of investments   1,019
Net cash provided by (used in) investing activities (142) 958
Cash flows from financing activities:    
Proceeds from issuance of common stock 27 42
Payments made for taxes of employees who surrendered shares related to unrestricted stock (107) (186)
Repurchase of common stock (260) (4,213)
Net cash used in financing activities (340) (4,357)
Decrease in cash and cash equivalents (2,645) (2,788)
Cash and cash equivalents, beginning of period 51,608 51,913
Cash and cash equivalents, end of period 48,963 49,125
Supplemental disclosure:    
Cash paid for income taxes $ 94 $ 473