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Share Repurchase Program - Additional Information (Detail) - USD ($)		1 Months Ended	3 Months Ended	6 Months Ended
	Nov. 05, 2018	Jan. 31, 2019	Jun. 30, 2020	Jun. 30, 2020	Jun. 30, 2019	Dec. 31, 2019
Equity Class Of Treasury Stock [Line Items]
Common stock, par value	$ 0.10		$ 0.10	$ 0.10		$ 0.10
Amount paid for common shares purchase		$ 2,604,000			$ 2,604,000
Common Stock
Equity Class Of Treasury Stock [Line Items]
Shares repurchase program, expiration date	Mar. 08, 2019
Number of shares purchased		158,048	0	0
Average price paid per share		$ 16.48
Common Stock | Maximum
Equity Class Of Treasury Stock [Line Items]
Number of shares intended to repurchase under repurchase program	$ 20,000

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Face amount or stated value per share of common stock.

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