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Consolidated Statements of Shareholders' Equity (USD $) In Thousands, except Share data, unless otherwise specified | Total | Common Stock | Retained Earnings [Member]
--- | --- | --- | ---
Stockholders' Equity Attributable to Parent, Beginning of Period at Dec. 31, 2009 | $ 407,022 | $ 145,423 | $ 261,599
Shares, Outstanding, Beginning of Period at Dec. 31, 2009 |  | 13,684,000 |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |
Net earnings and comprehensive income | 16,353 |  | 16,353
Issuance of common stock for employee benefit plans, shares |  | 19,000 |
Issuance of common stock for employee benefit plan, value | 564 | 564 |
Issuance of common stock for long-term incentive plan, shares |  | 81,000 |
Issuance of common stock for long-term incentive plan, value | 1,302 | 1,302 |
Tax windfall/(shortfall) provision from share-based compensation | (126) | (126) |
Issuance of common stock for acquisition, shares |  | 2,733,000 |
Issuance of common stock in connection with acquisition, value | 85,482 | 85,482 |
Repurchase of common stock, shares |  | (89,000) |
Stock repurchased during period, value | (944) | (944) |
Grant of restricted stock, shares |  | 143,000 |
Amortization of restricted stock, value | 4,154 | 4,154 |
Cash dividends | (8,165) |  | (8,165)
Restricted dividends | (76) |  | (76)
Stock option plan expense | 648 | 648 |
Cash dividends, in dollars per share | $ 0.50 |  |
Restricted dividends, in dollars per share | $ 0.50 |  |
Stockholders' Equity Attributable to Parent, End of Period at Dec. 31, 2010 | 506,214 | 236,503 | 269,711
Shares, Outstanding, End of Period at Dec. 31, 2010 |  | 16,571,000 |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |
Net earnings and comprehensive income | 64,355 |  | 64,355
Issuance of common stock for convertible note payable, shares |  | 453,000 |
Issuance of common stock for convertible note payable, value | 16,669 | 16,669 |
Issuance of common stock for employee benefit plans, shares |  | 24,000 |
Issuance of common stock for employee benefit plan, value | 725 | 725 |
Issuance of common stock for long-term incentive plan, shares |  | 103,000 |
Issuance of common stock for long-term incentive plan, value | 1,929 | 1,929 |
Tax windfall/(shortfall) provision from share-based compensation | 151 | 151 |
Repurchase of common stock, shares |  | (25,000) |
Restricted stock forfeitures |  | (1,000) |
Stock repurchased during period, value | (1,308) | (1,308) |
Grant of restricted stock, shares |  | 53,000 |
Amortization of restricted stock, value | 4,377 | 4,377 |
Cash dividends | (10,110) |  | (10,110)
Restricted dividends | (125) |  | (125)
Stock option plan expense | 1,153 | 1,153 |
Cash dividends, in dollars per share | $ 0.60 |  |
Restricted dividends, in dollars per share | $ 0.60 |  |
Stockholders' Equity Attributable to Parent, End of Period at Dec. 31, 2011 | 584,030 | 260,199 | 323,831
Shares, Outstanding, End of Period at Dec. 31, 2011 |  | 17,178,000 |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |
Net earnings and comprehensive income | 58,276 |  | 58,276
Issuance of common stock, stock option exercises, shares |  | 155,000 |
Issuance of common stock, stock option exercises, value | 5,663 | 5,663 |
Issuance of common stock for employee benefit plans, shares |  | 19,000 |
Issuance of common stock for employee benefit plan, value | 714 | 714 |
Issuance of common stock for long-term incentive plan, shares |  | 158,000 |
Issuance of common stock for long-term incentive plan, value | 4,207 | 4,207 |
Tax windfall/(shortfall) provision from share-based compensation | 1,407 | 1,407 |
Repurchase of common stock, shares |  | (84,000) |
Restricted stock forfeitures |  | (1,000) |
Stock repurchased during period, value | (5,094) | (5,094) |
Grant of restricted stock, shares |  | 23,000 |
Amortization of restricted stock, value | 6,377 | 6,377 |
Cash dividends | (12,351) |  | (12,351)
Restricted dividends | (170) |  | (170)
Stock option plan expense | 1,236 | 1,236 |
Cash dividends, in dollars per share | $ 0.72 |  |
Restricted dividends, in dollars per share | $ 0.72 |  |
Stockholders' Equity Attributable to Parent, End of Period at Dec. 31, 2012 | $ 644,295 | $ 274,709 | $ 369,586
Shares, Outstanding, End of Period at Dec. 31, 2012 |  | 17,448,000 |

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