v3.8.0.1
CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2018
Apr. 01, 2017
Cash flows from operating activities    
Net income $ 2,697 $ 824
Adjustments to reconcile net income to net cash provided by operating activities:    
Stock-based compensation 3,712 1,603
Depreciation and amortization 463 601
Deferred income taxes (830) 146
Foreign currency remeasurement (gain) loss (437) 240
Changes in operating assets and liabilities, net of effects from acquisitions:    
Accounts receivable (1,099) (2,986)
Unbilled accounts receivable (67) 679
Prepaid expenses and other current assets (928) (921)
Other non-current assets (18) 0
Accounts payable 545 (707)
Accrued expenses and other current liabilities 614 1,625
Deferred revenue 4,428 3,462
Other non-current liabilities 327 19
Net cash provided by operating activities 9,443 4,585
Cash flows from investing activities    
Purchases of property and equipment and software (144) (271)
Payments for acquisitions, net of cash acquired (5,000) 0
Purchase of short-term investment (15,099) (15,000)
Sale of short-term investment 15,000 15,000
Net cash used in investing activities (5,243) (271)
Cash flows from financing activities    
Proceeds from exercise of common stock options 868 1,330
Net cash provided by financing activities 868 1,330
Effect of exchange rate changes on cash and cash equivalents 91 (421)
Net increase in cash, cash equivalents, and restricted cash 5,159 5,223
Cash, cash equivalents and restricted cash, beginning of the period 86,728 61,094
Cash, cash equivalents and restricted cash, end of the period 91,887 66,317
Supplemental disclosure of cash flow activities    
Cash paid for taxes 273 0
Supplemental disclosure of non-cash operating, investing and financing activities    
Unpaid purchases of property and equipment 82 35
Series A Redeemable Convertible Preferred Stock dividend accretion $ 680 $ 602