Selected Operating Results Information (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Segment Reporting Information [Line Items]
Revenues	$ 39,650	$ 43,504
Income (loss) from operations	2,526	(457)
Home
Segment Reporting Information [Line Items]
Revenues	37,240	41,764
Income (loss) from operations	6,601	2,437
Office
Segment Reporting Information [Line Items]
Revenues	2,410	1,740
Income (loss) from operations	(1,645)	(1,572)
Mobile
Segment Reporting Information [Line Items]
Revenues
Income (loss) from operations	$ (2,430)	$ (1,572)