Bank Loan (Details) - USD ($)		3 Months Ended		6 Months Ended		9 Months Ended
	Mar. 02, 2015	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2015	Dec. 31, 2014	Mar. 31, 2014	Jun. 30, 2015	Jun. 30, 2014
Line of Credit Facility
Payments to Acquire Property, Plant, and Equipment				$ 11,383,000	$ 9,399,000
Short-term derivative liabilities		$ 79,000		79,000			$ 3,977,000
Net sales		142,307,000	$ 144,809,000	275,752,000	280,793,000
Cost of goods sold		89,399,000	91,667,000	172,265,000	179,530,000
Proceeds from sales of property, plant and equipment				5,826,000	142,000
Proceeds from stock option exercises				1,267,000	644,000
Interest Expense		109,000	208,000	230,000	415,000
Income tax expense		363,000	252,000	275,000	450,000
Restricted cash		0		0			1,002,000
Cash and cash equivalents		13,046,000	4,746,000	13,046,000	4,746,000		15,160,000	$ 11,993,000
Short-term investments		24,313,000		24,313,000			$ 23,665,000
Losses (gains) on derivative instruments designated as cash flow hedges reclassified to cost of goods sold		3,859,000	(5,132,000)	8,827,000	(9,842,000)
Net income		$ 5,561,000	$ 2,896,000	$ 4,487,000	$ 5,411,000
Net income per common share—diluted		$ 0.34	$ 0.18	$ 0.27	$ 0.33
Revolving Credit Facility
Line of Credit Facility
Current Borrowing Capacity		$ 59,400,000		$ 59,400,000
Amount borrowed		200,000		200,000
Remaining borrowing capacity		$ 47,800,000		$ 47,800,000
Debt, Weighted Average Interest Rate		1.65%		1.65%
Letter of Credit
Line of Credit Facility
Amount borrowed		$ 11,400,000		$ 11,400,000
JP Morgan Chase and SunTrust | Revolving Credit Facility
Line of Credit Facility
Line of Credit Facility, Maximum Borrowing Capacity	$ 75,000,000.0
Line Of Credit Facility, Accordion Feature, Maximum Borrowing Capacity	$ 50,000,000
Percentage of receivables eligible for advance	85.00%
Percentage of inventory eligible for advance	75.00%
Maximum percentage of inventory eligible for advance	85.00%
Maximum amount of advances based on fair market value of eligible real property	$ 25,000,000.0
Percentage of fair market value of eligible real property	75.00%
Maximum amount of advances based on fair market value of eligible trademarks	$ 10,000,000.0
JP Morgan Chase | Revolving Credit Facility
Line of Credit Facility
Line of Credit Facility, Maximum Borrowing Capacity	45,000,000.0
JP Morgan Chase | Letter of Credit
Line of Credit Facility
Line of Credit Facility, Maximum Borrowing Capacity	30,000,000.0
JP Morgan Chase | Swingline Loans [Member]
Line of Credit Facility
Line of Credit Facility, Maximum Borrowing Capacity	15,000,000.0
SunTrust | Revolving Credit Facility
Line of Credit Facility
Line of Credit Facility, Maximum Borrowing Capacity	$ 30,000,000.0
Coffee [Member]
Line of Credit Facility
Net gains (losses) on coffee-related derivative instruments		$ 32,000	$ (904,000)	$ (695,000)		$ (855,000)
Minimum [Member] | JP Morgan Chase and SunTrust | Revolving Credit Facility
Line of Credit Facility
Unused line fee	0.25%
Maximum [Member] | JP Morgan Chase and SunTrust | Revolving Credit Facility
Line of Credit Facility
Unused line fee	0.375%
Prime Rate [Member] | Minimum [Member]
Line of Credit Facility
Line of Credit Facility, Interest Rate Description	PRIME - 0.25%
Prime Rate [Member] | Minimum [Member] | Revolving Credit Facility
Line of Credit Facility
Debt Instrument, Basis Spread on Variable Rate	(0.25%)
Prime Rate [Member] | Maximum [Member]
Line of Credit Facility
Line of Credit Facility, Interest Rate Description	PRIME + 0.50%
Prime Rate [Member] | Maximum [Member] | Revolving Credit Facility
Line of Credit Facility
Debt Instrument, Basis Spread on Variable Rate	0.50%
London Interbank Offered Rate (LIBOR) [Member] | Minimum [Member]
Line of Credit Facility
Line of Credit Facility, Interest Rate Description	Adjusted LIBO Rate + 1.25%
London Interbank Offered Rate (LIBOR) [Member] | Minimum [Member] | Revolving Credit Facility
Line of Credit Facility
Debt Instrument, Basis Spread on Variable Rate	1.25%
London Interbank Offered Rate (LIBOR) [Member] | Maximum [Member]
Line of Credit Facility
Line of Credit Facility, Interest Rate Description	Adjusted LIBO Rate + 2.00%
London Interbank Offered Rate (LIBOR) [Member] | Maximum [Member] | Revolving Credit Facility
Line of Credit Facility
Debt Instrument, Basis Spread on Variable Rate	2.00%