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Stock Repurchases (Detail) - USD ($)		3 Months Ended
		Jun. 30, 2016	Mar. 31, 2016
February 2015
Stock repurchased and retired during period, shares		0
Stock repurchased and retired during period, value	[1]	$ 0
Stock repurchased, weighted average price per share		$ 0
Stock repurchase program, authorized amount			$ 20,000,000
Stock repurchase program expiration date		Oct. 20, 2016
October 2015
Stock repurchase program, authorized amount			15,000,000
Total Plan 2015
Stock repurchase program, remaining authorized repurchase amount			$ 15,000,000
[1] Amount excludes commission fees.

X

- Definition

Amount of stock repurchase plan authorized.

+ References

No definition available.

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- Definition

Expiration date for the purchase of an entity's own shares under a stock repurchase plan, in the CCYY-MM-DD format.

+ References

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- Definition

Amount remaining of a stock repurchase plan authorized.

+ References

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- Definition

Number of shares that have been repurchased and retired during the period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(28))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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-Topic 505
-SubTopic 10
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- Definition

Equity impact of the value of stock that has been repurchased and retired during the period. The excess of the purchase price over par value can be charged against retained earnings (once the excess is fully allocated to additional paid in capital).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
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-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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

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- Definition

Total cost of shares repurchased divided by the total number of shares repurchased.

+ References

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-SubTopic 30
-Section 45
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