Cost Reduction Actions Cost Reduction Actions (Wind-Down of Microsatellite Product Line) (Details) (USD $)	3 Months Ended
Oct. 31, 2012
Restructuring reserve, noncurrent	$ 3,438,000
Wind-Down of Microsatellite Product Line [Member]
Facility exit costs	803,000
Severance and related costs	76,000
Other	(57,000)
Restructuring reserve - beginning	1,136,000
Restructuring charges	822,000
Payments made	(537,000)
Restructuring reserve - ending	1,421,000
Restructuring reserve, current	1,118,000
Restructuring reserve, noncurrent	303,000
Facility exit costs [Member] \| Wind-Down of Microsatellite Product Line [Member]
Restructuring reserve - beginning	496,000
Restructuring charges	803,000
Payments made	(184,000)
Restructuring reserve - ending	1,115,000
Severance and related cost [Member] \| Wind-Down of Microsatellite Product Line [Member]
Restructuring reserve - beginning	310,000
Restructuring charges	76,000
Payments made	(349,000)
Restructuring reserve - ending	37,000
Other [Member] \| Wind-Down of Microsatellite Product Line [Member]
Restructuring reserve - beginning	330,000
Restructuring charges	(57,000)
Payments made	(4,000)
Restructuring reserve - ending	$ 269,000

The charge against earnings in the period, comprised of costs associated with restructuring activities not otherwise specified in the taxonomy pursuant to a duly authorized plan, excluding a discontinued operation as defined by generally accepted accounting principles. Costs of such activities include those for one-time termination benefits, termination of an operating lease or other contract, consolidating or closing facilities, and relocating employees, but excludes costs associated with the retirement of a long-lived asset and severance costs associated with established compensation plans.

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Amount charged against earnings in the period for incurred and estimated costs associated with exit from or disposal of business activities or restructurings pursuant to a duly authorized plan, excluding asset retirement obligations.

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- Definition

Carrying amount as of the balance sheet date of known and estimated obligations associated with exit from or disposal of business activities or restructurings pursuant to a duly authorized plan, which are expected to be paid in the next twelve months or in the normal operating cycle if longer. Costs of such activities include those for one-time termination benefits, termination of an operating lease or other contract, consolidating or closing facilities, relocating employees, and costs associated with an ongoing benefit arrangement, but excludes costs associated with the retirement of a long-lived asset.

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- Definition

Carrying amount as of the balance sheet date of known and estimated costs associated with exit from or disposal of business activities or restructurings pursuant to a duly authorized plan, which are expected to be paid after one year or beyond the next operating cycle, if longer. Costs of such activities include those for one-time termination benefits, termination of an operating lease or other contract, consolidating or closing facilities, and relocating employees, and costs associated with an ongoing benefit arrangement, but excludes costs associated with the retirement of a long-lived asset.

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- Definition

The charge against earnings in the period for known and estimated costs of termination benefits provided to current employees that are involuntarily terminated under a benefit arrangement associated with exit from or disposal of business activities or restructurings pursuant to a duly authorized plan, excluding costs or losses pertaining to an entity newly acquired in a business combination or a discontinued operation as defined by generally accepted accounting principles and costs associated with one-time termination benefits.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef

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+ Details