XML 46 R59.htm IDEA: XBRL DOCUMENT

Stockholders Equity - Additional Information (Detail) (USD $)	3 Months Ended	12 Months Ended
	Sep. 30, 2011	Dec. 31, 2012	Dec. 31, 2011
Class of Stock [Line Items]
Treasury stock retired			398,068
Aggregate cost of treasury stock retired			$ 796,000
Income tax charge			456,000
Profit from sale of common stock by the third-party stockholder to Contran	106,000
Reimbursement of costs of offering		$ 161,000

Amount of decrease of par value, additional paid in capital (APIC) and retained earnings of common and preferred stock retired from treasury when treasury stock is accounted for under the par value method.

+ References+ Details