Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Current assets:
Cash and cash equivalents	$ 8,645	$ 34,387
Accounts receivable, net	14,640	14,304
Inventory	4,694	5,337
Restricted assets, current	1,265	1,345
Other current assets	9,981	8,168
Total current assets	39,225	63,541
Property, equipment and software at cost	55,824	51,298
Accumulated depreciation and amortization	(33,284)	(30,442)
Property, equipment and software, net	22,540	20,856
Goodwill	47,842	47,842
Acquired curriculum and technology intangibles, net	2,731	5,209
Acquired publishing rights, net	1,459	2,762
Other intangible assets, net	3,231	4,499
Pre-publication costs, net	16,441	15,070
Restricted assets, less current portion	3,099	4,152
Other assets	4,817	5,286
Total assets	141,385	169,217
Current liabilities:
Accounts payable	1,993	1,612
Accrued expenses	14,224	17,432
Capital lease obligations, current		1,076
Current portion of long-term debt	3,850
Deferred revenue, current	74,107	61,788
Total current liabilities	94,174	81,908
Long-term liabilities:
Long-term debt	97,872	137,374
Capital lease obligations, less current portion		943
Deferred revenue, less current portion	11,481	9,409
Other liabilities	12,027	14,638
Total long-term liabilities	$ 121,380	$ 162,364
Commitments and contingencies (See Note 16)
Stockholders' equity (deficit):
Preferred Stock ($0.001 par value, 15,000 shares authorized, zero shares issued and outstanding at December 31, 2015 and 2014)	$ 0	$ 0
Common stock ($0.001 par value, 150,000 shares authorized, 52,268 and 52,006 shares issued, and 45,736 and 45,474 shares outstanding at December 31, 2015 and 2014, respectively)	52	52
Capital surplus	285,306	284,243
Accumulated deficit	(343,975)	(342,650)
Treasury stock at cost (6,532 shares at December 31, 2015 and 2014)	(12,784)	(12,784)
Accumulated other comprehensive loss:
Pension and postretirement plans	(2,768)	(3,916)
Accumulated other comprehensive loss	(2,768)	(3,916)
Total stockholders' equity (deficit)	(74,169)	(75,055)
Total liabilities and stockholders' equity (deficit)	$ 141,385	$ 169,217