Revenues (Tables)

3 Months Ended

May 31, 2019

Revenues [Abstract]

Disaggregation of Revenue [Table Text Block]

Disaggregated Revenue

The following table presents disaggregated revenue by customer industry (in thousands):

	Three Months Ended May 31,
	2019		2018
Net sales:
Industrial - oil and gas, construction, and general	$	164,800	$	151,308
Transmission and distribution	72,281		65,954
Power generation	52,042		44,974
Total net sales	$	289,123	$	262,236

Contract with Customer, Asset and Liability [Table Text Block]

Contract Liabilities

The following table shows the changes in contract liabilities for the three months ended May 31, 2019 and 2018, respectively (in thousands):

	May 31, 2019			May 31, 2018
Balance at beginning of period	$	56,928		$	22,698
Contract liabilities added during the period	10,970			16,441
Revenue recognized during the period	(45,579		)	(17,301		)
Balance at end of period	$	22,319		$	21,838