Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Cash flows from operating activities:
Net income (loss) from operations	$ (22,399)	$ 10,514	$ 42,151
Adjustments to reconcile net income (loss) from operations to net cash provided by operations:
Depreciation and amortization	10,601	10,777	6,302
Loss on disposal of assets	185	14	0
Deferred tax expense (benefit)	13,053	(4,936)	(691)
Stock-based compensation	3,466	2,766	3,835
Changes in assets and liabilities, net of effect of acquisitions:
Accounts receivable, net	(8,428)	(8,106)	2,860
Inventories, net	5,380	3,198	13,257
Foreign sales tax receivable	(692)	336	49
Other current assets	(1,574)	(410)	(358)
Accounts payable	(1,013)	163	(6,645)
Income taxes payable	11,926	(582)	2,946
Accrued expenses	2,514	4	1,351
Current deferred compensation	(77)	226	697
Deferred revenue	3,704	14,396	2,996
Other long-term liabilities	981	55	42
Net cash provided by operating activities	17,627	28,415	68,792
Cash flows from investing activities
Purchase of short term investments	(178,658)	(184,690)	(109,747)
Maturities of short term investments	195,000	134,775	129,725
Purchase of eSignLive, net of cash acquired			(74,486)
Additions to property and equipment	(3,088)	(2,043)	(1,362)
Additions to intangible assets	(107)	(144)	(89)
Other	(349)	(4,394)	3
Net cash provided by (used in) investing activities	12,798	(56,496)	(55,956)
Cash flows from financing activities of continuing operations:
Repayment of debt			(5,925)
Tax payments for restricted stock issuances	(640)	(1,051)	(837)
Tax benefit of stock-based compensation			318
Net cash used in financing activities	(640)	(1,051)	(6,444)
Effect of exchange rate changes on cash	(469)	(45)	(311)
Net increase (decrease) in cash	29,316	(29,177)	6,081
Cash and equivalents, beginning of period	49,345	78,522	72,441
Cash and equivalents, end of period	78,661	49,345	78,522
Supplemental cash flow disclosures:
Cash paid for income taxes	6,427	5,982	6,781
Cash paid for interest	$ 0	$ 0	$ 0