Supplemental Cash Flow Information - Additional Information (Detail) - USD ($)	9 Months Ended
Sep. 30, 2015	Sep. 30, 2014
Schedule Of Supplemental Cash Flow [Line Items]
Net cash (used in) operating activities from discontinued operations	$ 7,619,000	$ 3,862,000
Net cash (used in) investing activities from discontinued operations	$ 0	182,000
RFL [Member]
Schedule Of Supplemental Cash Flow [Line Items]
Net cash (used in) investing activities from discontinued operations		$ 182,000

Amount of cash inflow (outflow) of investing activities of discontinued operations. Investing activity cash flows include making and collecting loans and acquiring and disposing of debt or equity instruments and property, plant, and equipment and other productive assets.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 24

-URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3521-108585

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 205

-SubTopic 20

-Section 50

-Paragraph 5B

-Subparagraph (c)(1)

-URI http://asc.fasb.org/extlink&oid=51717284&loc=SL51721673-107760

Name:	us-gaap_CashProvidedByUsedInInvestingActivitiesDiscontinuedOperations
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration