Note 19 - Discontinued Operations - Major Classes of Assets and Liabilities and the Results of Discontinued Operations (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Accounts receivable, net		$ 10,961
Inventory, net		3,005
Prepaid expenses and other assets		315
Total major classes of current assets of the discontinued operations		14,281
Property and equipment, net		6,303
Goodwill		1,484
Other intangible assets, net		6,813
Other assets		185
Total major classes of noncurrent assets of the discontinued operations		14,785
Total assets of the disposal group classified as assets of discontinued operations in the consolidated balance sheets		29,066
Current liabilities:
Accounts payable		1,290
Accrued liabilities		3,326
Other liabilities		14
Total major classes of current liabilities of the discontinued operations		4,630
Total major classes of noncurrent liabilities of the discontinued operations		48
Total liabilities of the disposal group classified as liabilities of discontinued operations in the consolidated balance sheets		4,678
Major classes of line items constituting income (loss) from discontinued operations before income taxes:
Service revenue	53,325	56,700	$ 45,705
Cost of service revenue	34,662	36,613	29,596
Gross profit	18,663	20,087	16,109
Research and development	5,751	5,866	4,542
Sales and marketing	7,592	8,963	8,106
General and administrative	3,593	4,917	4,232
Income (loss) from discontinued operations before income taxes	1,727	341	(771)
Gain on disposition	145,982
Income tax expense	39,435
Income (loss) from discontinued operations	$ 108,274	$ 341	$ (771)