Note 1 - Organization and Significant Accounting Policies - Impact of Adoption on AOCI and Retained Earnings (Details) (Parentheticals) - Accounting Standards Update 2016-01 [Member]	Jul. 02, 2018 USD ($)
AOCI Attributable to Parent [Member]
Reclassification	$ 1,394,695
Reclassification	(1,394,695)
Retained Earnings [Member]
Reclassification	1,394,695
Reclassification	$ (1,394,695)

The amount of reclassification of cumulative tax effect from accumulated other comprehensive income.

No definition available.

Name:	bwla_ReclassificatonOfCumulativeTaxEffectFomAOCI
Namespace Prefix:	bwla_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant