Commitments and Contingencies - Summary of Future Capital Lease, Operating Lease and Financing Lease Obligation (Parenthetical) (Detail)	12 Months Ended
Dec. 31, 2013
Capital Leases [Member]
Leases Future Minimum Payments [Line Items]
Interest range, Minimum	3.60%
Interest range, Maximum	19.60%
Financing Obligations [Member]
Leases Future Minimum Payments [Line Items]
Interest range, Minimum	3.60%
Interest range, Maximum	19.60%

When presenting a range of interest rates, the highest effective rate for funds borrowed under the debt agreement as of the balance sheet date.

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 22

-Article 5

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.22(a)(1))

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

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Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration