Assets and Liabilities of Discontinued Operations (Detail) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012	Jun. 30, 2012
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Cash and cash equivalents	$ 76,190	$ 53,699	$ 53,280
Inventory	11,197	10,247
Other current assets	445	1,266
Total current assets of discontinued operations	2,750	3,614
Intangible assets, net	3,519	4,329
Goodwill	17,780	17,780
Other noncurrent assets	3,234	3,087
Assets of discontinued operations	3,367	4,264
Trade payables	2,419	2,222
Other current liabilities	1,213	1,009
Total current liabilities of discontinued operations	2,096	2,292
Liabilities of discontinued operations	9,096	9,792
Discontinued Operations
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Cash and cash equivalents	116	162
Inventory	437	516
FHLB stock	2,051	2,051
Real estate owned, net	95	830
Other current assets	51	55
Intangible assets, net	165	196
Goodwill	400	400
Other noncurrent assets	52	54
Litigation reserve	1,819	1,775
Trade payables	235	361
Unclaimed property	36	153
Other current liabilities	6	3
Repurchase reserve for loans sold	$ 7,000	$ 7,500