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Note 8 - Employee Benefit Plans (Detail) (USD $) In Thousands, except Share data, unless otherwise specified	6 Months Ended	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2012	Jun. 30, 2011	Jun. 30, 2010
Defined Contribution Plan, Cost Recognized	$ 509	$ 773	$ 710
Payments for Postemployment Benefits		1,997
Pension and Other Postretirement Benefit Plans, Amounts that Will be Amortized from Accumulated Other Comprehensive Income (Loss) in Next Fiscal Year		228
Defined Benefit Plan, Plan Amendments		1,165
Defined Benefit Plan, Curtailments		79
Defined Benefit Plan, Amortization of Prior Service Cost (Credit)		79
Defined Benefit Plan, Estimated Future Employer Contributions in Next Fiscal Year		604
Defined Benefit Plan, Ultimate Health Care Cost Trend Rate	5.00%	5.00%	5.00%
Defined Benefit Plan, Actual Plan Asset Allocations		42.00%
Allocated Share-based Compensation Expense	510	969	1,164
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized (in Shares)		175,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Remaining Contractual Term		10 years
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number (in Shares)	1,199,661	423,264	1,088,644	843,870
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period		5 years
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant (in Shares)		1,344,312
Modified Economic Profit	50.00%	100.00%
Stock Granted During Period, Value, Share-based Compensation, Gross		13
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Intrinsic Value	17	0	146
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Total Intrinsic Value	33	0	187
Proceeds from Stock Options Exercised	98	0	452
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested in Period, Fair Value	431	616	157
Targeted Bonus Award		90.00%
Modified Economic Profi tAmount	3,000
Directors Option Plan [Member] \| Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized (in Shares)		2,000
Directors Option Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized (in Shares)		180,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number (in Shares)		20,000
Salaried Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized (in Shares)		600,000
Annual Cash Incentive Plan [Member] \| Minimum [Member]
Modified Economic Profit		50.00%
Minimum [Member] \| Debt Securities [Member]
Defined Benefit Plan, Target Plan Asset Allocations		80.00%
Minimum [Member] \| Percentage Variance From Established Investment Category Targets [Member]
Defined Benefit Plan, Target Plan Asset Allocations		(10.00%)
Minimum [Member] \| Growth [Member]
Modified Economic Profit		50.00%
Minimum [Member] \| Target [Member]
Modified Economic Profit		100.00%
Minimum [Member] \| Target Growth [Member]
Modified Economic Profit		100.00%
Minimum [Member] \| Improvement [Member]
Modified Economic Profit		100.00%
Minimum [Member] \| Improvements In MEP [Member]
Targeted Bonus Award		100.00%
Minimum [Member]
Stock Granted During Period, Value, Share-based Compensation, Gross		1,500
Maximum [Member] \| Growth [Member]
Modified Economic Profit		100.00%
Maximum [Member] \| Bonus [Member]
Targeted Bonus Award		125.00%
Maximum [Member] \| HRCC [Member]
Modified Economic Profit		100.00%
Maximum [Member] \| Target Growth [Member]
Modified Economic Profit		125.00%
Maximum [Member]
Stock Granted During Period, Value, Share-based Compensation, Gross		4,500
Medicare Part D Subsidy Receipts [Member]
Defined Benefit Plan, Estimated Future Employer Contributions in Next Fiscal Year		30
Increase In Health Care Cost Trend [Member]
Policyholder Benefits and Claims Incurred, Health Care		299
Decrease In Health Care Cost Trend [Member]
Policyholder Benefits and Claims Incurred, Health Care		269
Increase In Service And Interest Cost [Member]
Policyholder Benefits and Claims Incurred, Health Care		20
Decrease In Service And Interest Cost [Member]
Policyholder Benefits and Claims Incurred, Health Care		34
Restricted Stock Awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number (in Shares)		103,939
Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number (in Shares)		31,264
The 2004 Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number (in Shares)		392,000
Stock Awards [Member]
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized		2,388
Restricted Stock Unit Awards [Member]
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized		1,623
Equity Securities [Member]
Defined Benefit Plan, Target Plan Asset Allocations		62.00%
Debt Securities [Member]
Defined Benefit Plan, Target Plan Asset Allocations		26.00%
Equity Securities, Other [Member]
Defined Benefit Plan, Target Plan Asset Allocations		12.00%
Debt Category Concentration [Member]
Defined Benefit Plan, Target Plan Asset Allocations		10.00%
Stock Awards [Member]
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized, Period for Recognition		1 year 292 days
Restricted Stock Unit Awards [Member]
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized, Period for Recognition		3 years 292 days
Incentive Compensation Payable [Member]
Targeted Bonus Award		90.00%
The 2004 Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized (in Shares)		2,680,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Remaining Contractual Term		10 years
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number (in Shares)		906,375
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period		5 years
Directors Option Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Remaining Contractual Term		2 years 9 months
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Exercisable, Weighted Average Remaining Contractual Term		10 years
Directors Stock Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant (in Shares)		39,797
Annual Cash Incentive Plan [Member]
Modified Economic Profi tAmount	1,500
Targeted Bonus Award Expense	0	2,911	0
Health Care Benefits [Member]
Defined Benefit Plan, Plan Amendments		1,021
Life Insurance [Member]
Defined Benefit Plan, Plan Amendments		$ 144
Effect On Accumulated Benefit Obligation And Service And Interest Cost [Member]
Defined Benefit Plan, Ultimate Health Care Cost Trend Rate		1.00%