Aggregate carrying amount, as of the balance sheet date, of noncurrent assets not separately disclosed in the balance sheet. Noncurrent assets are expected to be realized or consumed after one year (or the normal operating cycle, if longer).

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 210.5-02.17)

-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 17

-Article 5

Name:	us-gaap_OtherAssetsNoncurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Marketable Securities and Fair Value Measurements - Additional Information (Detail) (USD $)	Jun. 30, 2013	Mar. 31, 2013	Jun. 30, 2013 Other Investment	May 31, 2013 Equity Securities	May 31, 2013 Equity Securities Additional Investment commitment
Fair Value Measurements Disclosure [Line Items]
Cost method investment, fair value				$ 800,000	$ 700,000
Aggregate carrying amount of other investment	$ 779,000	$ 29,000	$ 800,000