Debt - Schedule of Debt (Parenthetical) (Detail) (RMCO, USD $) In Thousands, unless otherwise specified		9 Months Ended	12 Months Ended
Sep. 30, 2013	Sep. 30, 2013 2013 Credit Facility	Dec. 31, 2012 2010 Credit Facility
Debt Instrument [Line Items]
Credit Facility, principal payable	$ 575	$ 575	$ 650
Credit Facility, maturity		Jul. 31, 2020	Apr. 30, 2016
Credit Facility, unamortized discount		$ 468	$ 1,192

The amount of debt discount that was originally recognized at the issuance of the instrument that has yet to be amortized.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 835

-SubTopic 30

-Section 45

-Paragraph 1A

-URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28541-108399

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 835

-SubTopic 30

-Section 55

-Paragraph 8

-URI http://asc.fasb.org/extlink&oid=6584090&loc=d3e28878-108400

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