Segment Reporting (Details 1) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2015	Dec. 31, 2014
Revenue, operating expenses and income (loss) from operations
Product revenues									$ 138,175	$ 133,342
Service revenues									6,745	8,405
Total net revenues	$ 35,656	$ 40,339	$ 37,454	$ 31,471	$ 33,280	$ 41,144	$ 36,243	$ 31,080	144,920	141,747
Cost of product revenues									27,179	32,084
Cost of service revenues									4,151	5,790
Amortization expense									17,370	18,270
Total cost of revenues									48,700	56,144
Other operating expenses									76,166	73,348
Depreciation and amortization expense									3,868	4,209
Total costs and expenses									128,734	133,701
Income before interest, other income (expense) and income taxes									16,186	8,046
Net interest expense									(13,981)	(17,659)
Loss on extinguishment of debt									(4,016)	(922)
Other income, net									679	1,180
Income tax expense	324	(213)	(186)	(118)	(454)	(52)	(23)	(71)	(193)	(600)
Net loss	$ (2,799)	$ 1,966	$ 2,006	$ (2,498)	$ (3,075)	$ 995	$ (1,288)	$ (6,587)	(1,325)	(9,955)
Expenditures for property, equipment, software and pre-publication costs									19,937	17,875
Operating Segments | Learning A-Z Segment
Revenue, operating expenses and income (loss) from operations
Product revenues									55,167	44,385
Total net revenues									55,167	44,385
Cost of product revenues									1,950	1,586
Total cost of revenues									1,950	1,586
Other operating expenses									24,785	19,202
Total costs and expenses									26,735	20,788
Income before interest, other income (expense) and income taxes									28,432	23,597
Net loss									28,432	23,597
Expenditures for property, equipment, software and pre-publication costs									8,070	6,831
Operating Segments | Voyager Sopris Learning Segment
Revenue, operating expenses and income (loss) from operations
Product revenues									62,846	70,819
Service revenues									6,745	8,405
Total net revenues									69,591	79,224
Cost of product revenues									22,161	27,631
Cost of service revenues									4,151	5,790
Total cost of revenues									26,312	33,421
Other operating expenses									27,384	30,147
Total costs and expenses									53,696	63,568
Income before interest, other income (expense) and income taxes									15,895	15,656
Net loss									15,895	15,656
Expenditures for property, equipment, software and pre-publication costs									8,812	8,249
Operating Segments | ExploreLearning Segment
Revenue, operating expenses and income (loss) from operations
Product revenues									20,162	18,138
Total net revenues									20,162	18,138
Cost of product revenues									3,068	2,867
Total cost of revenues									3,068	2,867
Other operating expenses									9,992	10,213
Total costs and expenses									13,060	13,080
Income before interest, other income (expense) and income taxes									7,102	5,058
Net loss									7,102	5,058
Expenditures for property, equipment, software and pre-publication costs									2,592	1,917
Other
Revenue, operating expenses and income (loss) from operations
Amortization expense									17,370	18,270
Total cost of revenues									17,370	18,270
Other operating expenses									14,005	13,786
Depreciation and amortization expense									3,868	4,209
Total costs and expenses									35,243	36,265
Income before interest, other income (expense) and income taxes									(35,243)	(36,265)
Net interest expense									(13,981)	(17,659)
Loss on extinguishment of debt									(4,016)	(922)
Other income, net									679	1,180
Income tax expense									(193)	(600)
Net loss									(52,754)	(54,266)
Expenditures for property, equipment, software and pre-publication costs									$ 463	$ 878