XML 17 R6.htm IDEA: XBRL DOCUMENT v3.8.0.1
CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)
$ in Thousands
 9 Months Ended
Sep. 30, 2017
Sep. 30, 2016
Cash flows from operating activities:    
Net loss $ (14,825) $ (19,154)
Adjustments to reconcile net loss to net cash provided by operating activities:    
Depreciation and amortization 6,222 5,919
Stock-based compensation 13,824 13,069
Other non-cash items 930 1,798
Changes in operating assets and liabilities:    
Accounts receivable, net 16,049 7,311
Inventory (3,242) 2,303
Prepaid expenses and other assets (2,870) 349
Accounts payable (1,243) (878)
Accrued liabilities (3,023) 906
Deferred revenue (1,904) 10,440
Other 102 (224)
Net cash provided by operating activities 10,020 21,839
Cash flows from investing activities:    
Purchases of marketable securities (69,580) (109,268)
Proceeds from sales and maturities of marketable securities 70,866 23,787
Payment for acquisition 0 (4,380)
Purchases of property and equipment (4,223) (4,256)
Purchase of intangible asset 0 (1,500)
Net cash used in investing activities (2,937) (95,617)
Cash flows from financing activities:    
Proceeds from issuance of common stock under employee equity incentive plans 7,665 7,116
Repurchases and retirement of common stock (3,071) 0
Payment of contingent consideration (650) 0
Other (83) (75)
Net cash provided by financing activities 3,861 7,041
Net increase (decrease) in cash and cash equivalents 10,944 (66,737)
Cash and cash equivalents - beginning of period 28,975 98,117
Cash and cash equivalents - end of period 39,919 31,380
Non-cash investing and financing activities:    
Common stock issued under asset purchase agreement 0 1,313
Inventory transfers to property and equipment 2,368 1,451
Purchases of property and equipment included in accounts payable $ 65 $ 275