Capital Stock (Narrative) (Detail) - $ / shares shares in Thousands	May 04, 2017	Feb. 02, 2017	Dec. 01, 2016	Aug. 25, 2016	Mar. 31, 2017	Jun. 30, 2016
Dividends Payable [Line Items]
Common stock, shares authorized					75,000	75,000
Preferred stock, shares authorized					2,000	2,000
Dividends declared, per share amount		$ 0.065	$ 0.065	$ 0.065
Dividends declared, date of declaration		Feb. 02, 2017	Dec. 01, 2016	Aug. 25, 2016
Dividend paid, date		Mar. 24, 2017	Dec. 22, 2016	Sep. 20, 2016
Dividends declared, date of record		Mar. 10, 2017	Dec. 12, 2016	Sep. 09, 2016
Subsequent Event
Dividends Payable [Line Items]
Dividends declared, per share amount	$ 0.065
Dividends declared, date of declaration	May 04, 2017
Dividends payable, date to be paid	Jun. 23, 2017
Dividends declared, date of record	Jun. 09, 2017
Stock repurchase program | Subsequent Event
Dividends Payable [Line Items]
Number of shares authorized to be repurchased	5,000