Supplemental Cash Flow Information - Additional Information (Detail) (USD $)	3 Months Ended
Mar. 31, 2015	Mar. 31, 2014
Schedule Of Supplemental Cash Flow [Line Items]
Net cash (used in) operating activities from discontinued operations	$ 579,000	$ 264,000
Net cash (used in) investing activities from discontinued operations		65,000
RFL [Member]
Schedule Of Supplemental Cash Flow [Line Items]
Net cash (used in) investing activities from discontinued operations		$ 65,000

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=31042434&loc=d3e3521-108585

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