Note M - Segment Information - Selected Operating Results (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Home [Member]
Revenues	$ 26,466	$ 28,882	$ 69,332	$ 95,288
Income from operations	5,677	5,480	11,998	19,768
Office [Member]
Revenues	7,692	6,254	20,162	15,130
Income from operations	(266)	(1,646)	(2,765)	(3,361)
Mobile [Member]
Revenues	4,610	83	13,097	83
Income from operations	(794)	(1,703)	(3,019)	(8,690)
Revenues	38,768	35,219	102,591	110,501
Income from operations	$ 4,617	$ 2,131	$ 6,214	$ 7,717