Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016
Cash flows provided by operating activities:
Net income	$ 2,352	$ 6,895
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation, amortization and accretion	6,074	6,558
Deferred income tax expense	1,069	4,346
Stock based compensation	1,953	1,368
Provision for doubtful accounts, service credits and other	458	321
Adjustment of non-cash transaction taxes	(700)	(169)
Changes in assets and liabilities:
Accounts receivable	(1,242)	(1,421)
Prepaid expenses, inventory, intangibles and other assets	(2,684)	1,197
Accounts payable, accrued liabilities and other	(3,175)	(342)
Deferred revenue	2,561	1,126
Net cash provided by operating activities	6,666	19,879
Cash flows used in investing activities:
Purchase of property and equipment, net of proceeds from disposals of property and equipment	(5,198)	(2,981)
Net cash used in investing activities	(5,198)	(2,981)
Cash flows used in financing activities:
Cash distributions to stockholders	(10,239)	(5,150)
Purchase of common stock (including commissions), net of proceeds from issuance of common stock	(9,894)	(5,985)
Net cash used in financing activities	(20,133)	(11,135)
Net (decrease) increase in cash and cash equivalents	(18,665)	5,763
Cash and cash equivalents, beginning of period	125,816	111,332
Cash and cash equivalents, end of period	107,151	117,095
Supplemental disclosure:
Income taxes paid	$ 1,964	$ 598