Total number of shares issued during the period, including shares forfeited, as a result of Restricted Stock Awards.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 129

-Paragraph 4, 5

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher AICPA

-Name Accounting Principles Board Opinion (APB)

-Number 12

-Paragraph 10

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 505

-SubTopic 10

-Section 50

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21463-112644

Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 505

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.3-04)

-URI http://asc.fasb.org/extlink&oid=6959260&loc=d3e187085-122770

Name:	us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardGross
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

Subsequent Events - Additional Information (Detail) (USD $) In Thousands, except Share data, unless otherwise specified	1 Months Ended		1 Months Ended	12 Months Ended
	Jan. 18, 2012 Restricted Stock Units (RSUs) Non Employee Directors	Jan. 15, 2013 Subsequent Event	Jan. 08, 2013 Subsequent Event Restricted Stock Units (RSUs) Non Employee Directors	Jan. 08, 2017 Scenario, Forecast Restricted Stock Units (RSUs) Non Employee Directors	Jan. 08, 2016 Scenario, Forecast Restricted Stock Units (RSUs) Non Employee Directors	Jan. 08, 2015 Scenario, Forecast Restricted Stock Units (RSUs) Non Employee Directors	Jan. 08, 2014 Scenario, Forecast Restricted Stock Units (RSUs) Non Employee Directors
Subsequent Event [Line Items]
Issue of Non-vested Shares	11,764		5,257
Percentage of Unforfeitable Shares				25.00%	25.00%	25.00%	25.00%
Fair value of Restricted Shares	$ 141		$ 101
Maximum Borrowing Capacity		$ 40,000
Percentage Of Outstanding Shares		65.00%