Consolidated Statements of Operations and Retained Earnings - USD ($) shares in Thousands, $ in Thousands		3 Months Ended			9 Months Ended
		Jan. 31, 2017		Jan. 31, 2016	Jan. 31, 2017		Jan. 31, 2016
REVENUES:
Fulfillment services		$ 8,222		$ 8,759	$ 23,908		$ 26,666
Real estate land sales		1,461		3,197	7,710		5,487
Other revenues (Note 8)		94		242	1,832		841
Revenues	[1]	9,777		12,198	33,450		32,994
COSTS AND EXPENSES:
Real estate land sales		848		2,781	6,370		4,699
Operating expenses:
Fulfillment services		6,855		7,888	20,235		24,535
Real estate selling expenses		11		54	69		162
Other		359		360	1,119		1,040
General and administrative expenses:
Fulfillment services		345		707	1,025		2,452
Real estate operations		130		135	433		445
Corporate operations		787		737	2,364		2,392
Impairment of real estate assets		150	[1]	0	150	[1]	0
Interest expense		22		342	328		1,085
Costs and Expenses, Total		9,507		13,004	32,093		36,810
Income (loss) from operations before income taxes		270		(806)	1,357		(3,816)
Provision (benefit) for income taxes	[1]	96		(237)	441		(1,392)
Net income (loss)		174		(569)	916		(2,424)
Retained earnings, beginning of period		47,521		55,148	46,779		57,003
Retained earnings, end of period		$ 47,695		$ 54,579	$ 47,695		$ 54,579
Earnings (loss) per share, net - basic and diluted (in dollars per share)		$ 0.02		$ (0.07)	$ 0.11		$ (0.30)
Weighted average number of common shares outstanding - basic (in shares)		8,053		8,038	8,048		8,035
Weighted average number of common shares outstanding - diluted (in shares)		8,080		8,059	8,074		8,059

[1] Revenue information provided for each segment includes amounts grouped as Other in the accompanying consolidated statements of operations. Corporate and Other is net of intercompany eliminations.