Consolidated Statements of Cash Flows (Parenthetical) $ in Thousands	Apr. 13, 2015 USD ($)
Long Lived Assets Held-for-sale [Line Items]
Net proceeds from SVBIF sale transaction	$ 39,300
Sales price of assets sold	48,600
Cash and cash equivalents included in sale of assets	$ 9,300

Aggregate cash proceeds received from a combination of transactions that are classified as investing activities in which assets, which may include one or more investments, are sold to third-party buyers. This element can be used by entities to aggregate proceeds from all asset sales that are classified as investing activities.

No definition available.

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