[Line Items] for Schedule of Shareholders' Equity [Table]

No definition available.

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- Definition

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

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 1
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- Definition

Amount of stock repurchase plan authorized.

+ References

No definition available.

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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.

+ References

No definition available.

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- Definition

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

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- Definition

Number of shares that have been repurchased during the period and are being held in treasury.

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- Definition

Equity impact of the cost of common and preferred stock that were repurchased during the period. Recorded using the cost method.

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Stockholders' Equity (Details) - USD ($)			1 Months Ended	3 Months Ended		106 Months Ended	149 Months Ended	165 Months Ended
Stockholders' Equity (Details) - USD ($)	Nov. 08, 2018	May 18, 2018	Apr. 30, 2019	Mar. 31, 2019	Mar. 31, 2018	Mar. 31, 2019	Mar. 31, 2019	Mar. 31, 2019	Feb. 28, 2019	May 15, 2018	May 19, 2015
Schedule of Shareholders' Equity [Line Items]
Stock repurchased during period (in shares)				128,504	133,695			13,225,308
Aggregate price of shares repurchased since inception				$ 5,070,855	$ 4,938,613			$ 193,592,573
Average price of shares repurchased since inception (per share)				$ 39.46	$ 36.94			$ 14.64
Dividend Declared
Schedule of Shareholders' Equity [Line Items]
Cash dividends declared per common share:	$ 0.16	$ 0.16
Open market
Schedule of Shareholders' Equity [Line Items]
Stock repurchase program amount authorized (in shares)											5,700,000.0
Stock repurchase program, authorized amount									$ 20,000,000.0	$ 15,000,000.0
Stock repurchased during period (in shares)				5,799	0	4,101,566
Aggregate price of shares repurchased since inception				$ 199,841	$ 0	$ 69,805,654
Average price of shares repurchased since inception (per share)				$ 34.46	$ 0.00	$ 17.02
401(k)
Schedule of Shareholders' Equity [Line Items]
Stock repurchased during period (in shares)				107,000	118,203			7,154,776
Aggregate price of shares repurchased since inception				$ 4,282,961	$ 4,378,925			$ 104,824,208
Average price of shares repurchased since inception (per share)				$ 40.03	$ 37.05			$ 14.65
401(k) \| Subsequent Event
Schedule of Shareholders' Equity [Line Items]
Stock repurchased during period (in shares)			61,992
Aggregate price of shares repurchased since inception			$ 2,900,000
Directors and employees
Schedule of Shareholders' Equity [Line Items]
Stock repurchased during period (in shares)				15,705	15,492		1,968,966
Aggregate price of shares repurchased since inception				$ 588,053	$ 559,688		$ 18,962,711
Average price of shares repurchased since inception (per share)				$ 37.44	$ 36.13		$ 9.63