Note 9 - Long-term Debt (Detail) - Summary of Applicable Margin (USD $)	Dec. 31, 2012
Level I [Member] | Minimum [Member]
Average Excess Availability (in Dollars)	$ 50,000,000
Level I [Member] | Base Rate Loans [Member]
Applicable Margin	1.25%
Level I [Member] | LIBOR Loans [Member]
Applicable Margin	2.25%
Level II [Member] | Maximum [Member]
Average Excess Availability (in Dollars)	50,000,000
Level II [Member] | Minimum [Member]
Average Excess Availability (in Dollars)	30,000,000
Level II [Member] | Base Rate Loans [Member]
Applicable Margin	1.50%
Level II [Member] | LIBOR Loans [Member]
Applicable Margin	2.50%
Level III [Member] | Maximum [Member]
Average Excess Availability (in Dollars)	$ 30,000,000
Level III [Member] | Base Rate Loans [Member]
Applicable Margin	1.75%
Level III [Member] | LIBOR Loans [Member]
Applicable Margin	2.75%