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Subsequent Events Subsequent Events (Details) (USD $)	0 Months Ended
	Mar. 12, 2015	Apr. 28, 2015
Subsequent Event [Line Items]
Quarterly cash dividend declared, common stock	$ 0.11us-gaap_CommonStockDividendsPerShareDeclared
Subsequent Event [Member]
Subsequent Event [Line Items]
Quarterly cash dividend declared, common stock		$ 0.12us-gaap_CommonStockDividendsPerShareDeclared / us-gaap_SubsequentEventTypeAxis = us-gaap_SubsequentEventMember
Increase (Decrease) in Cash Dividend, Percentage		9.00%prov_IncreaseDecreaseinCashDividendPercentage / us-gaap_SubsequentEventTypeAxis = us-gaap_SubsequentEventMember
Stock Repurchase Program, Percent of Shares Authorized to be Repurchased		5.00%prov_StockRepurchaseProgramPercentofSharesAuthorizedtobeRepurchased / us-gaap_SubsequentEventTypeAxis = us-gaap_SubsequentEventMember
Stock Repurchase Program, Number of Shares Authorized to be Repurchased		430,651us-gaap_StockRepurchaseProgramNumberOfSharesAuthorizedToBeRepurchased / us-gaap_SubsequentEventTypeAxis = us-gaap_SubsequentEventMember
Stock Repurchase Program, Remaining Number of Shares Authorized to be Repurchased		105,899us-gaap_StockRepurchaseProgramRemainingNumberOfSharesAuthorizedToBeRepurchased / us-gaap_SubsequentEventTypeAxis = us-gaap_SubsequentEventMember

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- Definition

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- Definition

Aggregate dividends declared during the period for each share of common stock outstanding.

+ References

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 04

-Article 3



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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 505

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.3-04)

-URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770

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- Definition

The number of shares authorized to be repurchased by an entity's Board of Directors under a stock repurchase plan.

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- Definition

The remaining number of shares authorized to be repurchased by an entity's Board of Directors under a stock repurchase plan.

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