Condensed Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Revenue from Contract with Customer, Including Assessed Tax	$ 61,378	$ 66,311
Cost of Goods and Services Sold	26,492	28,727
Gross Profit	34,886	37,584
Operating Expenses
Selling and Marketing Expense	21,564	24,920
General and Administrative Expense	13,454	14,880
Research and development	20,458	19,136
Income from operations	(20,590)	(21,352)
Other income (expense):
Convertible debt interest and amortization	(1,576)	(2,062)
Other Nonoperating Income (Expense)	286	831
Loss before income tax provision	(21,880)	(22,583)
Income tax provision (benefit)	149	152
Net income (loss)	$ (22,029)	$ (22,735)
Earnings Per Share, Basic	$ (0.50)	$ (0.53)
Net earnings (loss) per share:
Earnings Per Share, Basic and Diluted	(0.50)	(0.53)
Earnings Per Share, Diluted	$ (0.50)	$ (0.53)
Weighted average number of shares:
Weighted Average Number of Shares Outstanding, Basic and Diluted	44,245	43,102
Weighted Average Number of Shares Outstanding, Basic	44,245	43,102
Other comprehensive income, net of tax:
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax	$ (608)	$ (170)
Other comprehensive income	(608)	(170)
Comprehensive income (loss)	(22,637)	(22,905)
Accumulated Other Comprehensive Income, net of tax [Member]
Other comprehensive income, net of tax:
Other comprehensive income	(608)	(170)
Subscription and Circulation [Member]
Revenue from Contract with Customer, Including Assessed Tax	42,648	43,170
Cost of Goods and Services Sold	13,801	12,864
Maintenance [Member]
Revenue from Contract with Customer, Including Assessed Tax	9,674	12,523
Cost of Goods and Services Sold	2,258	2,790
Subscription, maintenance and support
Revenue from Contract with Customer, Including Assessed Tax	52,322	55,693
Cost of Goods and Services Sold	16,059	15,654
Service [Member]
Revenue from Contract with Customer, Including Assessed Tax	9,056	10,618
Cost of Goods and Services Sold	$ 10,433	$ 13,073