Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.19(b),22(b))

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 19, 22

-Article 5

Name:	us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Subsequent Events - Additional Information (Detail) (USD $)	1 Months Ended	3 Months Ended
	Apr. 12, 2013	Mar. 31, 2014	May 07, 2014 Subsequent event	May 07, 2014 Subsequent event Revolving Credit Facility
Subsequent Event [Line Items]
Letter of credit issued	$ 200,000
Letter of credit expiration date	Apr. 15, 2014	Apr. 15, 2015
Notice period required to terminate letter of credit	30 days
Interest percentage to obtain line of credit			100.00%
Revolving loan facility, maximum principal amount				$ 6,000,000