Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Operating activities:
Net loss	$ (1,325)	$ (9,955)
Adjustments to reconcile net loss to net cash provided by operating activities:
Depreciation and amortization expense	21,238	22,479
Loss on extinguishment of debt	4,016	922
Amortization of note discount and deferred financing costs	1,226	1,509
Gain on sale of IntelliTools product line		(289)
Non-cash (gain) loss on disposal of assets	(524)	93
Stock-based compensation and expense	687	511
Deferred income taxes	(13)	(21)
Changes in operating assets and liabilities:
Accounts receivable, net	(336)	1,463
Inventory	643	3,626
Other current assets	(2,391)	(1,285)
Other assets	1,359	(1,538)
Restricted assets	1,133	1,338
Accounts payable	381	311
Accrued expenses	(2,808)	(4,648)
Deferred revenue	14,391	9,876
Other long-term liabilities	(904)	(749)
Net cash provided by operating activities	36,773	23,643
Investing activities:
Cash paid for acquisition	(400)	(3,600)
Proceeds from sale of IntelliTools product line		806
Expenditures for property, equipment, software and pre-publication costs	(19,937)	(17,875)
Net cash used in investing activities	(20,337)	(20,669)
Financing activities:
Proceeds from issuance of long-term debt	103,114
Repayment of debt	(140,000)	(35,008)
Debt issuance costs	(2,346)
Payments related to extinguishment of debt	(2,520)
Principal payments under capital lease obligations	(802)	(995)
Proceeds from exercise of stock options	376	53
Borrowings under revolving credit facility	175
Payment of revolving credit facility	(175)
Share repurchases		(630)
Net cash used in financing activities	(42,178)	(36,580)
Change in cash and cash equivalents	(25,742)	(33,606)
Cash and cash equivalents, beginning of period	34,387	67,993
Cash and cash equivalents, end of period	8,645	34,387
Supplemental disclosure of cash flow information:
Net income taxes paid	552	173
Interest paid	$ 18,334	$ 17,505