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Consolidated Statements of Stockholders' Equity - USD ($) $ in Thousands | Total stockholders equity | Preferred Stock [Member] | Common Stock [Member] | Additional Paid-in Capital [Member] | Total Accumulated Other Comprehensive (Loss) Earnings [Member] | Foreign Currency Translation Adjustments [Member] | Unrealized Derivative Gains (Losses) [Member] | Minimum Retirement Benefit Liability Adjustments [Member] | Deferred Compensation in Equity [Member] | Retained Earnings [Member] | Treasury Stock at Cost [Member] | Treasury Stock Held for Deferred Compensaton [Member] | Total
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Balances at Sep. 30, 2015 | $ 1,153,104 |  | $ 106 | $ 131,231 | $ (51,458) | $ (21,610) | $ 166 | $ (30,014) | $ 4,322 | $ 1,495,274 | $ (422,049) | $ (4,322) |
Balance, Preferred Stock, shares at Sep. 30, 2015 |  | 0 |  |  |  |  |  |  |  |  |  |  |
Balance, Common Stock, shares at Sep. 30, 2015 |  |  | 72,960,000 |  |  |  |  |  |  |  |  |  |
Balance, Treasury Stock, shares at Sep. 30, 2015 |  |  |  |  |  |  |  |  |  |  | (9,763,000) |  |
Balance, Treasury stock held for deferred compensation, Shares at Sep. 30, 2015 |  |  |  |  |  |  |  |  |  |  |  | (173,000) |
Net earnings | 25,820 |  |  |  |  |  |  |  |  | 25,820 |  |  | $ 25,820
Other comprehensive income (loss), net of tax | (8,587) |  |  |  | (8,587) | (9,086) | 18 | 481 |  |  |  |  |
Cash dividends paid | (6,321) |  |  |  |  |  |  |  |  | (6,321) |  |  |
Purchases of treasury stock | (30,712) |  |  |  |  |  |  |  |  |  | $ (30,712) |  |
Purchases of treasury stock, shares |  |  |  |  |  |  |  |  |  |  | (624,000) |  |
Sales of treasury stock | 1,252 |  |  | (406) |  |  |  |  |  |  | $ 1,658 |  |
Sales of treasury stock, shares |  |  |  |  |  |  |  |  |  |  | 49,000 |  |
Common shares issued from treasury stock to settle employee liabilities |  |  |  |  |  |  |  |  |  |  |  |  | 0
Stock-based compensation | 8,451 |  |  | 8,451 |  |  |  |  |  |  |  |  |
Purchases of stock by deferred compensation plan |  |  |  |  |  |  |  |  | 1,027 |  |  | $ (1,027) |
Purchases of stock by deferred compensation plan, shares |  |  |  |  |  |  |  |  |  |  |  | (21,000) |
Distribution of stock from deferred compensation plan |  |  |  |  |  |  |  |  | (4) |  |  | $ 4 |
Distribution of stock from deferred compensation plan, shares |  |  |  |  |  |  |  |  |  |  |  | (1,000) |
Balances at Dec. 31, 2015 | 1,143,007 |  | $ 106 | 139,276 | (60,045) | (30,696) | 184 | (29,533) | 5,345 | 1,514,773 | $ (451,103) | $ (5,345) |
Balance, Preferred Stock, shares at Dec. 31, 2015 |  | 0 |  |  |  |  |  |  |  |  |  |  |
Balance, Common Stock, shares at Dec. 31, 2015 |  |  | 72,960,000 |  |  |  |  |  |  |  |  |  |
Balance, Treasury Stock, shares at Dec. 31, 2015 |  |  |  |  |  |  |  |  |  |  | (10,338,000) |  |
Balance, Treasury stock held for deferred compensation, Shares at Dec. 31, 2015 |  |  |  |  |  |  |  |  |  |  |  | (195,000) |
Balances at Sep. 30, 2016 | 1,212,595 |  | $ 106 | 141,570 | (65,705) | (25,971) | 179 | (39,913) | 5,089 | 1,649,506 | $ (512,882) | $ (5,089) | $ 1,212,595
Balance, Preferred Stock, shares at Sep. 30, 2016 |  | 0 |  |  |  |  |  |  |  |  |  |  | 0
Balance, Common Stock, shares at Sep. 30, 2016 |  |  | 72,960,000 |  |  |  |  |  |  |  |  |  | 72,960,000
Balance, Treasury Stock, shares at Sep. 30, 2016 |  |  |  |  |  |  |  |  |  |  | (11,374,000) |  | (11,374,000)
Balance, Treasury stock held for deferred compensation, Shares at Sep. 30, 2016 |  |  |  |  |  |  |  |  |  |  |  | (157,000) | (157,000)
Net earnings | 46,548 |  |  |  |  |  |  |  |  | 46,548 |  |  | $ 46,548
Other comprehensive income (loss), net of tax | (13,863) |  |  |  | (13,863) | (15,111) | (11) | 1,259 |  |  |  |  |
Cash dividends paid | (6,779) |  |  |  |  |  |  |  |  | (6,779) |  |  |
Purchases of treasury stock | (24,004) |  |  |  |  |  |  |  |  |  | $ (24,004) |  |
Purchases of treasury stock, shares |  |  |  |  |  |  |  |  |  |  | (350,000) |  |
Sales of treasury stock | 4,843 |  |  | (907) |  |  |  |  |  |  | $ 5,750 |  |
Sales of treasury stock, shares |  |  |  |  |  |  |  |  |  |  | 139,000 |  |
Common shares issued from treasury stock to settle employee liabilities | 1,767 |  |  | 740 |  |  |  |  | 1,767 |  | $ 1,027 | $ (1,767) | 1,767
Common shares issued from treasury stock to settle employee liabilities, shares |  |  |  |  |  |  |  |  |  |  | 26,000 | (26,000) |
Stock-based compensation | 1,261 |  |  | 1,261 |  |  |  |  |  |  |  |  |
Purchases of stock by deferred compensation plan |  |  |  |  |  |  |  |  | 37 |  |  | $ (37) |
Distribution of stock from deferred compensation plan |  |  |  |  |  |  |  |  | (4) |  |  | $ 4 |
Distribution of stock from deferred compensation plan, shares |  |  |  |  |  |  |  |  |  |  |  | 0 |
Balances at Dec. 31, 2016 | $ 1,222,368 |  | $ 106 | $ 142,664 | $ (79,568) | $ (41,082) | $ 168 | $ (38,654) | $ 6,889 | $ 1,689,275 | $ (530,109) | $ (6,889) | $ 1,222,368
Balance, Preferred Stock, shares at Dec. 31, 2016 |  | 0 |  |  |  |  |  |  |  |  |  |  | 0
Balance, Common Stock, shares at Dec. 31, 2016 |  |  | 72,960,000 |  |  |  |  |  |  |  |  |  | 72,960,000
Balance, Treasury Stock, shares at Dec. 31, 2016 |  |  |  |  |  |  |  |  |  |  | (11,559,000) |  | (11,374,000)
Balance, Treasury stock held for deferred compensation, Shares at Dec. 31, 2016 |  |  |  |  |  |  |  |  |  |  |  | (183,000) | (157,000)

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