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Summary of Significant Accounting Policies - Restricted Stock Awards, Stock Options and Warrants Excluded from Diluted Share Computation (Detail) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Options/Warrants/Awards excluded from the computation of dilutive earnings per share	735	1,691
Restricted Stock Awards [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Options/Warrants/Awards excluded from the computation of dilutive earnings per share	158	466
Stock Options [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Options/Warrants/Awards excluded from the computation of dilutive earnings per share	198	466
Warrants [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Options/Warrants/Awards excluded from the computation of dilutive earnings per share	379	759

Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

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