Earnings per Share (Detail) - The Computations of Basic and Diluted Earnings (Loss) Per Share (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended				9 Months Ended
	Sep. 30, 2013		Sep. 30, 2012		Sep. 30, 2013		Sep. 30, 2012
Continuing Operations:
Net income (loss) from continuing operations attributable to shareholders	$ (6,325)		$ 418		$ (5,974)		$ 1,444
Net income (loss) from continuing operations attributable to common shareholders	(6,325)		392		(5,974)		1,353
Discontinued Operations:
Discontinued operations attributable to shareholders	0		0		1,406		0
Discontinued operations attributable to common shareholders	0		0		1,406		0
Share information:
Basic weighted average common shares(ii)	17,127,523	[1]	16,976,054	[1]	17,045,001	[1]	16,936,366	[1]
Potential dilutive securities(iii)	0	[2]	66	[2]	0	[2]	313	[2]
Diluted weighted average common shares	17,127,523		16,976,120		17,045,001		16,936,679
Basic earnings (loss) per share
Income (loss) from continuing operations (dollars per share)	$ (0.37)		$ 0.02		$ (0.35)		$ 0.08
Income (loss) from discontinued operations (dollars per share)	$ 0.00		$ 0.00		$ 0.08		$ 0.00
Net income (loss) (dollars per share)	$ (0.37)		$ 0.02		$ (0.27)		$ 0.08
Diluted earnings (loss) per share
Income (loss) from continuing operations (dollars per share)	$ (0.37)		$ 0.02		$ (0.35)		$ 0.08
Income (loss) from discontinued operations (dollars per share)	$ 0.00		$ 0.00		$ 0.08		$ 0.00
Net income (loss) (dollars per share)	$ (0.37)		$ 0.02		$ (0.27)		$ 0.08
Continuing Operations [Member]
Continuing Operations:
Less: Amounts allocated to participating securities (nonvested shares and units)(i)	0	[3]	26	[3]	0	[3]	91	[3]
Discontinued Operations:
Less: Amounts allocated to participating securities (nonvested shares and units)(i)	0	[3]	(26)	[3]	0	[3]	(91)	[3]
Gain On Sale Of Discontinued Operations [Member]
Continuing Operations:
Less: Amounts allocated to participating securities (nonvested shares and units)(i)	0	[3]	0	[3]	0	[3]	0	[3]
Discontinued Operations:
Less: Amounts allocated to participating securities (nonvested shares and units)(i)	$ 0	[3]	$ 0	[3]	$ 0	[3]	$ 0	[3]

[1] Under the two-class method, basic weighted average common shares exclude outstanding nonvested participating securities consisting of restricted share awards of 699,612 and 956,207 for the quarters and year to date periods ended September 30, 2013 and 2012, respectively.

[2] Anti-dilutive shares related to stock options totaled 18,000 and 30,000 for the quarters ended September 30, 2013 and 2012, respectively

[3] Participating securities include 699,612 and 956,207 nonvested restricted shares for the quarters and year to date periods ended September 30, 2013 and 2012, respectively, as well as 413,764 and 196,264 restricted share units for the quarters and year to date periods ended September 30, 2013 and 2012, respectively.