Net Income (Loss) Per Share - Reconciliation of Earnings Per Share (Detail) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012	Dec. 31, 2009
Numerator:
Income (loss) from continuing operations	$ 776	$ (2,308)	$ 3,029	$ (2,527)
Gain from discontinued operations, net of tax	0	153	0	153	187
Net income (loss) used in computing basic and diluted net income (loss) per share	$ 776	$ (2,155)	$ 3,029	$ (2,374)
Denominator:
Shares used in computation of basic net income (loss) per share (weighted average common shares outstanding)	28,146	28,058	27,787	28,000
Dilutive potential common shares:
Shares used in computation of diluted net income (loss) per share	29,293	28,058	28,912	28,000
Basic net income (loss) per share from:
Continuing operations	$ 0.03	$ (0.08)	$ 0.11	$ (0.09)
Discontinued operations	$ 0.00	$ 0.00	$ 0.00	$ 0.00
Total	$ 0.03	$ (0.08)	$ 0.11	$ (0.09)
Diluted net income (loss) per share:
Continuing operations	$ 0.03	$ (0.08)	$ 0.10	$ (0.09)
Discontinued operations	$ 0.00	$ 0.00	$ 0.00	$ 0.00
Total	$ 0.03	$ (0.08)	$ 0.10	$ (0.09)
Restricted Stock and RSUs [Member]
Dilutive potential common shares:
Dilutive potential common shares	272	0	323	0
Stock Options [Member] | Maximum [Member]
Dilutive potential common shares:
Dilutive potential common shares	875	0	802	0