Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019
Operating activities:
Net (loss) income	$ (780)	$ 72
Adjustments to reconcile net loss to net cash provided by operating activities:
Depreciation, amortization and accretion	4,218	4,694
Deferred income tax expense	290	208
Stock-based compensation	2,544	1,557
Provision for doubtful accounts, service credits and other	673	272
Changes in assets and liabilities:
Accounts receivable	(670)	(6,682)
Prepaid expenses, inventory, and other assets	1,997	2,075
Accounts payable, accrued liabilities and other	(440)	(3,161)
Deferred revenue	(1,373)	1,734
Net cash provided by operating activities	6,459	769
Investing activities:
Purchase of property and equipment	(1,895)	(2,783)
Capitalized software development	(5,300)	0
Purchase of short-term investments	(29,877)	(29,650)
Maturity of short-term investments	30,000	4,000
Net cash used in investing activities	(7,072)	(28,433)
Financing activities:
Cash distributions to stockholders	(5,008)	(5,049)
Purchase of common stock (including commissions)	0	(1,810)
Proceeds from issuance of common stock under the Employee Stock Purchase Plan	166	119
Purchase of common stock for tax withholding on vested equity awards	(903)	(1,017)
Net cash used in financing activities	(5,745)	(7,757)
Effect of exchange rate on cash	(117)	(93)
Net decrease in cash and cash equivalents	(6,475)	(35,514)
Cash and cash equivalents, beginning of period	47,361	83,343
Cash and cash equivalents, end of period	40,886	47,829
Supplemental disclosure:
Income taxes paid	$ 148	$ 683